Air Crash Investigation season 21

On 15 December 2014, Loganair Flight 6780 starts an uncontrolled descent while on approach to Sumburgh Airport in Scotland. The pilots regain control and make an emergency landing at Aberdeen, with no fatalities. After a lightning strike, the pilots wrongly assumed the autopilot was disengaged and tried to climb. The conflict caused the autopilot to set the elevator controls into a dive.

On 10 November 2015, ExecuFlight Flight 1526 enters an aerodynamic stall and crashes into an apartment building and an embankment during final approach to Akron Fulton International Airport in Akron, Ohio. Both crew members and all seven passengers on board are killed in the crash.

On 27 August 2006, Comair Flight 5191, operating for Delta Connection, crashes into a wooded area while taking off from Blue Grass Airport in Kentucky, killing all but the first officer on board. The pilots lost situational awareness and inadvertently taxied onto the wrong runway.

On 29 October 2018, Lion Air Flight 610 enters a nosedive and crashes into the Java Sea shortly after taking off from Soekarno–Hatta International Airport in Jakarta, Indonesia, on a flight to Pangkal Pinang. All 181 passengers and 8 crew members on board are killed in the crash.

On 17 April 2018, Southwest Airlines Flight 1380 makes an emergency landing at Philadelphia International Airport after its left engine explodes. A passenger dies after being partially ejected from the aircraft. The engine failure was caused by a fatigue crack in a fan blade.

On 12 March 2018, US-Bangla Airlines Flight 211 skids off the runway, travels through the airport perimeter fence, and crashes into a football field during landing at Tribhuvan International Airport in Kathmandu, Nepal. 51 of the 71 people on board are killed in the accident.

On 6 February 1991, a military aerial refueling aircraft loses both engines from under the left wing while on a combat mission in Saudi Arabia during the Gulf War, causing serious flight control problems and forcing the pilots to make an emergency landing. The incident was attributed to wake turbulence from a passing KC-135.

On 9 June 1995, Ansett New Zealand Flight 703 suffers a landing gear malfunction during final approach to Palmerston North Airport in New Zealand. The aircraft descends until it crashes into hilly terrain as the pilots try to resolve the problem. 4 of the 21 people on board are killed.

On 18 June 1998, Propair Flight 420 crashes while attempting to conduct an emergency landing at Montréal–Mirabel International Airport after an in-flight fire causes its left wing to fail, killing all 11 people on board. It was later determined that the aircraft's left brakes overheated during takeoff.

On 14 August 2013, UPS Airlines Flight 1354 clips the tops of trees and crashes into a hillside about one nautical mile short of the runway during final approach to Birmingham–Shuttlesworth International Airport in Alabama. Both crew members on board are killed in the crash.